Hey xing for me, one gun reloading works properly.
Setting two guns to c0p0 c0p1 works for lightun but many P1 shots goes to P2 aiming and viceversa.
Setting gun1 to m0d0 m0d1 and gun2 to m1d0 m1d2, won't work becaucse I think "d" means deplacement (relative coordinates), and dont work with lightuns.
And setting gun1 to m0p0 m0p1 and gun2 to m1p0 m1p2 which, atmy understanding would be the correct configuration, don't work.
So, what is your configuration you say does work with two guns?